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Original habitats for the bandicoot rats were probably ecologically similar to the man-made environments where they are now found, as many planted crops or fallow fields resemble native grassland, rice fields are marshlike, and orchards may approximate scrub or open forest. Of the two species of Nesokia , the short-tailed bandicoot rat, or pest rat N. Its range extends from northern Bangladesh through Central Asia to northeastern Egypt and also north of the Himalayas from Turkmenistan to western China. Inhabiting cultivated fields and natural grasslands in generally arid regions, the rats excavate extensive tunnels just below the surface and push up mounds of earth at intervals that conceal entrances and exits.

They forage on bulbs and succulent roots, rarely emerging above ground, and cause extensive damage to grain crops. An excellent swimmer, it lives in natural marshes at the confluence of the Tigris and Euphrates rivers in southeastern Iraq and builds nests on reed platforms above water level. All bandicoot rats belong to the subfamily Murinae of the family Muridae within the order Rodentia.

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Mice and Rats in Research | National Anti-Vivisection Society

Thank you for your feedback. They occupy habitats including sandy flats, open grasslands, and grassy areas within forest, heaths, savannas, and tropical rainforests. The xanthurus group comprises five species indigenous to Sulawesi and nearby Peleng Island , where they inhabit tropical rainforest formations at all elevations.

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There are 11 species whose relationships are unresolved. These have endemic ranges from peninsular India through Southeast Asia to the Philippines. Most now live, or once lived, in tropical rainforests; two species are extinct. Among their closest living relatives are the bandicoot rats genera Bandicota and Nesokia. Information about the evolutionary history of the genus is scanty; fossils from the Pleistocene Epoch 2,, to 11, years ago in Asia, Java, and Australia represent the oldest extinct species of Rattus.

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Article Media. Info Print Print. Table Of Contents. Submit Feedback. Thank you for your feedback. Introduction General features Natural history Classification and paleontology. Written By: Guy Musser. See Article History. Start your free trial today for unlimited access to Britannica. Learn More in these related Britannica articles:. If rats eat some novel-flavoured substance and shortly thereafter are made mildly ill for example, by an injection of a drug such as apomorphine or lithium chloride , they afterward will show a marked aversion to the novel food.

Because they will show an aversion even though…. Changing one amino acid from valine to isoleucine in the fifth transmembrane domain, which….

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Animals mistaken for rats

By signing up, you agree to our Privacy Notice. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. More About. Rats, like dogs , cats and people, can often develop commonly encountered medical problems, such as breast tumors, respiratory tract disease and uterine infections.

Some of these conditions can be avoided altogether such as uterine infections that may be prevented by surgically removing the uterus and ovaries before 6 months of age , while others can be treated if caught early such as breast tumors that may be removed with a mastectomy. To prevent or treat disease, rats must have regular checkups with a rat-savvy veterinarian. They should be examined initially after purchase or adoption and then, ideally, given their limited life spans, checked every six months after that to try to increase the likelihood of diagnosing and treating disease early on.

So if you want an intelligent, interactive, entertaining and easily trainable pet, consider a pet rat. Rats may not live as long as dogs and cats , but the time you do have with them will be thoroughly rewarding. Bartonella is a type bacteria that can be transmitted to cats, dogs and humans from exposure to infected fleas and…. Want to give your pup yummy, low-calorie treats? Not sure about food puzzles? Our veterinarian reveals why the payoff for your pet is well worth any extra work. The friendly and inquisitive LaPerm has an easy-care coat that comes in a variety of colors and patterns.

Check out our collection of more than videos about pet training, animal behavior, dog and cat breeds and more.

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Wonder which dog or cat best fits your lifestyle? Our new tool will narrow down more than breeds for you. If the video doesn't start playing momentarily, please install the latest version of Flash. By Dr.

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